ML20196E369

Special Rept 88-05:on 880208,fire Suppression Water Sys Declared Inoperable Due to Inoperable Electric & Diesel Driven Fire Pumps.Sampling Procedure CHM-5105 Revised & Auxiliary Fuel Storage Tank Assembled

ML20196E369
Person / Time
Site:	Rancho Seco
Issue date:	02/19/1988
From:	Firlit J SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
88-05, 88-5, AGM-NPP-88-103, NUDOCS 8803010058
Download: ML20196E369 (3)

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$SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT 0 6201 S Street P.o. Box 15830. Sacramento CA 95852-1830,19161 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CAUFORNIA

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AGM/NPP 88-103 FEB 19 sq U. S. Nuclear Regulatory Commissio l Attn: J. B. Hartin, Regional Admi iistrator Region V Office of Inspection and Enforcement 1450 Haria Lane, Suite 210 Halnut Creek, CA 94596 Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. OPR-54 SPECIAL REPORT NUMBER 88-05: INOPERABLE HOTOR AND DIESEL DRIVEN FIRE PUMPS

Dear Mr. Hartin:

On February 8, 1988, the diesel driven fire pump was declared inoperable because the diesel driven fire pump fuel oil storage tank (T-996) sample taken per Surveillance Requirement 4.18.2.1.h 2 was unacceptable. The motor driven fire pump is out of service for a scheduled controller replacement as identified in LER 87-29. In accordance with Technical Specification Sections 3.14.2.3 and 6.9.5.E, the Sacramento Municipal Utility District hereby submits Special Report 88-05 describing the problem and corrective actions taken.

Please contact me if you have any questions. Members of your staff with questions requiring additional information or clarification may contact Mr. Kurt Zimmermann at (916) 452-3211, extension 4627.

Sincerely, eph F. Firlit Assistant General Manager, Nuclear Power Production Attachment cc: G. Kalman, NRC, Rockville (w/atch)

A. D'Angelo, NRC, Rancho Seco ( " )

F. J. Miraglia, NRR, Rockville ( "

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8803010058 880219 4 e

PDR ADOCK 05000312 s PDR RANCHO $ECO NUCLEAR GENERATING STATION D 14440 Twin Cities Road, Herald, CA 95638 9799;(209) 333-29

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SPECIAL REPORT NUMBER 88-05 Inoperable Mo;or and Diesel Driven Fire Pumps Date of Repar_t Date of Occurrences February 6, 1988 February 8, 1988 Plant Conditions Prior to Occurrence The plant has been in a major outage with the reactor in cold shutdown.

Identification of Occurrences The electric driven fire pump (P-440) has been inoperable since February 6, 1988, due to a controller replacement. The diesel driven fire pump (P-996) was declared inoperable on February 8, 1988 at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />. Due to the inoperable status of both fire pumps, the Fire Suppression Water System was declared inoperable as defined by Rancho Seco Technical Specification Section 3.14.2.1.

[ Description of Occurrence l

l At approximately 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br /> on February 8,1988, the diesel driven fire pump (P-996) was declared inoperable. The quarterly sampling of the diesel fire i pump oil storage tank (T-996) was taken in accordance with Chemistry Proce' a2

! CHH-5105 and Surveillance 'rrocedure SP.908. The water and sediment conttn; of l the sample taken was not within the acceptance limits as specified in Table 1 l of ASTH-0975-74. The diesel driven fire pump is functional and remains lined up to supply water header in the "auto start" mode to maintain firefi'jhting capabilities on site.

The electric driven fire pump (P-440) remains inoperable. The existing

! controller is being replaced by an Underwriters' Laboratories (VL)/ Factory

! Mutual (FH) approved controller as committed in LER 87-29.

Corrective Action Taken l

Compensatory actions outlined in Technical Specification 2 action 3.14.2.3 were t satisfied due to the plant being in a cold shutdown condition.

Past sampling practices allowed samples to be taken from the fuel tank drain l line. This line is located several inches above the bottom of the tank.

i Revised procedure CHH-5105, used for this quarterly surveillance, now requires that the sample be taken within 1/2 inch of the bottom as defined by ASTH-0270-65.

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SPECIAL REPORT NUMBER 88-05 (Continued)

An auxiliary fuel storage tank was assembled to provide an alternate fuel source if necessary. A vendor cleaned the fuel storage tank (T-996) using various techniques including hydrolazing. The tank was refilled and procedure SP.908 was successfully performed. The diesel driven fire pump (P-996) was declared operable at 2110 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br /> on February 16, 1988.

The corrective action plan for the electric motor driven fire pump includes completion of the controller replacement and performance of Special Test Procedure STP.ll50A and procedure SP.005. The electric motor driven fire pump is expected to be returned to operable status by February 26, 1988.

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